23845181086665 has 24 divisors (see below), whose sum is σ = 41331760908360. Its totient is φ = 12717394930944.

The previous prime is 23845181086631. The next prime is 23845181086681. The reversal of 23845181086665 is 56668018154832.

It can be written as a sum of positive squares in 4 ways, for example, as 7882151705289 + 15963029381376 = 2807517^2 + 3995376^2 .

It is not a de Polignac number, because 23845181086665 - 2⁷ = 23845181086537 is a prime.

It is a super-2 number, since 2×23845181086665² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30826779 + ... + 31590831.

It is an arithmetic number, because the mean of its divisors is an integer number (1722156704515).

Almost surely, 2^{23845181086665} is an apocalyptic number.

It is an amenable number.

23845181086665 is a deficient number, since it is larger than the sum of its proper divisors (17486579821695).

23845181086665 is a wasteful number, since it uses less digits than its factorization.

23845181086665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457593 (or 1457590 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 23845181086665 in words is "twenty-three trillion, eight hundred forty-five billion, one hundred eighty-one million, eighty-six thousand, six hundred sixty-five".